Question

a crowbar having the length of 1.75 metres is used to balance a load of 500 Newton if the distance between the fulcrum and the load is 0.5 metre, calculate .(fiction is neglected ) i. effort applied to balance the load ​

Answer 1

200 N

Step-by-step explanation:

Assume that counterclockwise is positive and clockwise is negative.

The 500 N load is 0.5 m from the fulcrum, so the effort force F on the other end is 1.25 m from the fulcrum.

Sum of the torques about the fulcrum equal 0.

∑τ = Iα

(500 N) (0.5 m) − F (1.25 m) = 0

F = 200 N